Apparatus

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sensors Mode-S transponder

A3FF2E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N357DW · CESSNA 172 Skyhawk · operated by FLIGHT TRAINING AIRCRAFT LLC

Hex
A3FF2E
Octal
50777456
Decimal
10,747,694
Country
US
Tail
N357DW
Type
C172
No current signal · last broadcast 14h ago
Flights observed
154
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A3FF2E.

Country allocation

The ICAO 24-bit address A3FF2E falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
CXK557 - 154 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CXK557 - Jul 13, 20:25 UTCJul 13, 21:35 UTC1h 10m
2026-07-10 CXK557 OGD → OGD Jul 10, 19:55 UTCJul 10, 21:15 UTC1h 20m
2026-07-10 CXK557 - Jul 10, 16:55 UTCJul 10, 18:50 UTC1h 55m
2026-07-10 CXK557 OGD → OGD Jul 10, 15:15 UTCJul 10, 16:05 UTC50m
2026-07-09 CXK557 - Jul 9, 20:50 UTCJul 9, 23:05 UTC2h 15m
2026-07-09 CXK557 OGD → OGD Jul 9, 17:15 UTCJul 9, 18:45 UTC1h 30m
2026-07-09 CXK557 - Jul 9, 14:45 UTCJul 9, 16:20 UTC1h 35m
2026-07-08 CXK557 OGD → OGD Jul 8, 22:55 UTCJul 9, 00:05 UTC1h 10m
2026-07-07 CXK557 - Jul 7, 20:05 UTCJul 7, 22:05 UTC2h 0m
2026-07-07 CXK557 - Jul 7, 00:50 UTCJul 7, 01:25 UTC35m
2026-07-06 CXK557 OGD → OGD Jul 6, 20:05 UTCJul 6, 21:55 UTC1h 50m
2026-07-03 CXK557 OGD → OGD Jul 3, 12:30 UTCJul 3, 13:35 UTC1h 5m
2026-07-03 CXK557 OGD → OGD Jul 3, 11:45 UTCJul 3, 12:25 UTC40m
2026-06-19 CXK557 - Jun 19, 20:44 UTCJun 19, 22:19 UTC1h 35m
2026-06-19 CXK557 OGD → OGD Jun 19, 17:14 UTCJun 19, 19:09 UTC1h 55m
2026-06-19 CXK557 - Jun 19, 14:39 UTCJun 19, 16:25 UTC1h 45m
2026-06-18 CXK557 OGD → OGD Jun 18, 19:30 UTCJun 18, 19:55 UTC25m
2026-06-18 CXK557 OGD → OGD Jun 18, 17:00 UTCJun 18, 18:30 UTC1h 30m
2026-06-18 CXK557 OGD → OGD Jun 18, 14:25 UTCJun 18, 15:50 UTC1h 25m
2026-06-18 CXK557 OGD → OGD Jun 18, 11:45 UTCJun 18, 13:20 UTC1h 35m
2026-06-17 CXK557 - Jun 17, 22:45 UTCJun 18, 00:10 UTC1h 25m
2026-06-17 CXK557 - Jun 17, 17:35 UTCJun 17, 18:45 UTC1h 10m
2026-06-17 CXK557 - Jun 17, 14:55 UTCJun 17, 16:10 UTC1h 15m
2026-06-17 CXK557 OGD → OGD Jun 17, 11:20 UTCJun 17, 12:25 UTC1h 5m
2026-06-17 CXK557 OGD → OGD Jun 17, 00:40 UTCJun 17, 02:30 UTC1h 50m
2026-06-16 CXK557 - Jun 16, 22:15 UTCJun 16, 23:45 UTC1h 30m
2026-06-16 CXK557 - Jun 16, 19:45 UTCJun 16, 21:30 UTC1h 46m
2026-06-16 CXK557 - Jun 16, 17:35 UTCJun 16, 18:50 UTC1h 15m
2026-06-16 CXK557 - Jun 16, 01:35 UTCJun 16, 03:05 UTC1h 30m
2026-06-15 CXK557 OGD → OGD Jun 15, 22:25 UTCJun 16, 00:15 UTC1h 50m
2026-06-15 CXK557 - Jun 15, 19:39 UTCJun 15, 21:09 UTC1h 30m
2026-06-15 CXK557 - Jun 15, 17:25 UTCJun 15, 18:29 UTC1h 5m
2026-06-12 CXK557 OGD → OGD Jun 12, 22:55 UTCJun 13, 00:25 UTC1h 30m
2026-06-12 CXK557 - Jun 12, 21:05 UTCJun 12, 21:50 UTC45m
2026-06-12 CXK557 - Jun 12, 18:35 UTCJun 12, 20:00 UTC1h 25m
2026-06-11 CXK557 - Jun 11, 21:40 UTCJun 11, 23:10 UTC1h 30m
2026-06-11 CXK557 OGD → OGD Jun 11, 11:15 UTCJun 11, 13:00 UTC1h 45m
2026-06-10 CXK557 - Jun 10, 21:30 UTCJun 10, 22:45 UTC1h 15m
2026-06-10 CXK557 - Jun 10, 19:40 UTCJun 10, 20:15 UTC35m
2026-06-10 CXK557 - Jun 10, 17:35 UTCJun 10, 18:15 UTC40m
2026-06-10 CXK557 OGD → OGD Jun 10, 15:00 UTCJun 10, 16:20 UTC1h 20m
2026-06-10 CXK557 OGD → OGD Jun 10, 11:20 UTCJun 10, 14:05 UTC2h 45m
2026-06-05 CXK557 - Jun 5, 19:10 UTCJun 5, 21:10 UTC2h 0m
2026-06-01 CXK557 OGD → OGD Jun 1, 18:05 UTCJun 1, 18:45 UTC40m
2026-06-01 CXK557 OGD → OGD Jun 1, 16:00 UTCJun 1, 16:40 UTC40m
2026-06-01 CXK557 OGD → OGD Jun 1, 14:45 UTCJun 1, 15:05 UTC20m
2026-05-31 CXK557 - May 31, 22:20 UTCMay 31, 23:40 UTC1h 20m
2026-05-31 CXK557 - May 31, 20:15 UTCMay 31, 20:30 UTC15m
2026-05-31 CXK557 - May 31, 17:40 UTCMay 31, 18:45 UTC1h 5m
2026-05-29 CXK557 - May 29, 20:50 UTCMay 29, 21:00 UTC10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N357DW page for operator, model, and routing details .

Mode-S A3FF2E frequently asked

What is Mode-S code A3FF2E?
A3FF2E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N357DW.
Where is Mode-S A3FF2E registered?
Mode-S code A3FF2E is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A3FF2E broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3FF2E, octal 50777456, decimal 10,747,694.
What flights does A3FF2E operate?
Mode-S A3FF2E has broadcast 1 distinct callsign, including CXK557.